Merge pull request #35615 from eeckstein/simplify-silnode

SIL: let SingleValueInstruction only inherit from a single SILNode (2nd try)

Author: eeckstein

include/swift/SIL/ApplySite.h

@@ -90,28 +90,30 @@ class ApplySite {
 
   SILModule &getModule() const { return Inst->getModule(); }
 
-  static ApplySite isa(SILNode *node) {
-    auto *i = dyn_cast<SILInstruction>(node);
-    if (!i)
-      return ApplySite();
-
-    auto kind = ApplySiteKind::fromNodeKind(i->getKind());
+  static ApplySite isa(SILInstruction *inst) {
+    auto kind = ApplySiteKind::fromNodeKind(inst->getKind());
     if (!kind)
       return ApplySite();
 
     switch (kind.getValue()) {
     case ApplySiteKind::ApplyInst:
-      return ApplySite(cast<ApplyInst>(node));
+      return ApplySite(cast<ApplyInst>(inst));
     case ApplySiteKind::BeginApplyInst:
-      return ApplySite(cast<BeginApplyInst>(node));
+      return ApplySite(cast<BeginApplyInst>(inst));
     case ApplySiteKind::TryApplyInst:
-      return ApplySite(cast<TryApplyInst>(node));
+      return ApplySite(cast<TryApplyInst>(inst));
     case ApplySiteKind::PartialApplyInst:
-      return ApplySite(cast<PartialApplyInst>(node));
+      return ApplySite(cast<PartialApplyInst>(inst));
     }
     llvm_unreachable("covered switch");
   }
 
+  static ApplySite isa(SILValue value) {
+    if (auto *inst = value->getDefiningInstruction())
+      return ApplySite::isa(inst);
+    return ApplySite();
+  }
+
   ApplySiteKind getKind() const { return ApplySiteKind(Inst->getKind()); }
 
   explicit operator bool() const { return Inst != nullptr; }
@@ -181,8 +183,8 @@ class ApplySite {
   /// Calls to (previous_)dynamic_function_ref have a dynamic target function so
   /// we should not optimize them.
   bool canOptimize() const {
-    return !DynamicFunctionRefInst::classof(getCallee()) &&
-      !PreviousDynamicFunctionRefInst::classof(getCallee());
+    return !swift::isa<DynamicFunctionRefInst>(getCallee()) &&
+      !swift::isa<PreviousDynamicFunctionRefInst>(getCallee());
   }
 
   /// Return the type.
@@ -493,24 +495,27 @@ class FullApplySite : public ApplySite {
   FullApplySite(BeginApplyInst *inst) : ApplySite(inst) {}
   FullApplySite(TryApplyInst *inst) : ApplySite(inst) {}
 
-  static FullApplySite isa(SILNode *node) {
-    auto *i = dyn_cast<SILInstruction>(node);
-    if (!i)
-      return FullApplySite();
-    auto kind = FullApplySiteKind::fromNodeKind(i->getKind());
+  static FullApplySite isa(SILInstruction *inst) {
+    auto kind = FullApplySiteKind::fromNodeKind(inst->getKind());
     if (!kind)
       return FullApplySite();
     switch (kind.getValue()) {
     case FullApplySiteKind::ApplyInst:
-      return FullApplySite(cast<ApplyInst>(node));
+      return FullApplySite(cast<ApplyInst>(inst));
     case FullApplySiteKind::BeginApplyInst:
-      return FullApplySite(cast<BeginApplyInst>(node));
+      return FullApplySite(cast<BeginApplyInst>(inst));
     case FullApplySiteKind::TryApplyInst:
-      return FullApplySite(cast<TryApplyInst>(node));
+      return FullApplySite(cast<TryApplyInst>(inst));
     }
     llvm_unreachable("covered switch");
   }
 
+  static FullApplySite isa(SILValue value) {
+    if (auto *inst = value->getDefiningInstruction())
+      return FullApplySite::isa(inst);
+    return FullApplySite();
+  }
+
   FullApplySiteKind getKind() const {
     return FullApplySiteKind(getInstruction()->getKind());
   }

include/swift/SIL/DynamicCasts.h

@@ -158,17 +158,14 @@ struct SILDynamicCastInst {
   SILDynamicCastInst(ID *i) : inst(i) {}
 #include "swift/SIL/SILNodes.def"
 
-  static SILDynamicCastInst getAs(SILNode *node) {
-    auto *i = dyn_cast<SILInstruction>(node);
-    if (!i)
-      return SILDynamicCastInst();
-    auto kind = SILDynamicCastKind::fromNodeKind(i->getKind());
+  static SILDynamicCastInst getAs(SILInstruction *inst) {
+    auto kind = SILDynamicCastKind::fromNodeKind(inst->getKind());
     if (!kind)
       return SILDynamicCastInst();
     switch (kind.getValue()) {
 #define DYNAMICCAST_INST(ID, PARENT)                                           \
   case SILDynamicCastKind::ID:                                                 \
-    return SILDynamicCastInst(cast<ID>(node));
+    return SILDynamicCastInst(cast<ID>(inst));
 #include "swift/SIL/SILNodes.def"
     }
   }

include/swift/SIL/PrettyStackTrace.h

@@ -19,12 +19,12 @@
 #define SWIFT_SIL_PRETTYSTACKTRACE_H
 
 #include "swift/SIL/SILLocation.h"
+#include "swift/SIL/SILNode.h"
 #include "llvm/Support/PrettyStackTrace.h"
 
 namespace swift {
 class ASTContext;
 class SILFunction;
-class SILNode;
 
 void printSILLocationDescription(llvm::raw_ostream &out, SILLocation loc,
                                  ASTContext &ctx);
@@ -74,7 +74,7 @@ class PrettyStackTraceSILNode : public llvm::PrettyStackTraceEntry {
   const char *Action;
 
 public:
-  PrettyStackTraceSILNode(const char *action, const SILNode *node)
+  PrettyStackTraceSILNode(const char *action, SILNodePointer node)
     : Node(node), Action(action) {}
 
   virtual void print(llvm::raw_ostream &OS) const override;

include/swift/SIL/SILArgument.h

@@ -78,7 +78,7 @@ class SILArgument : public ValueBase {
   explicit SILArgument(ValueKind subClassKind, SILType type,
                        ValueOwnershipKind ownershipKind,
                        const ValueDecl *inputDecl = nullptr)
-      : ValueBase(subClassKind, type, IsRepresentative::Yes),
+      : ValueBase(subClassKind, type),
         parentBlock(nullptr), decl(inputDecl) {
     Bits.SILArgument.VOKind = static_cast<unsigned>(ownershipKind);
   }
@@ -106,7 +106,7 @@ class SILArgument : public ValueBase {
 
   static bool classof(const SILInstruction *) = delete;
   static bool classof(const SILUndef *) = delete;
-  static bool classof(const SILNode *node) {
+  static bool classof(SILNodePointer node) {
     return node->getKind() >= SILNodeKind::First_SILArgument &&
            node->getKind() <= SILNodeKind::Last_SILArgument;
   }
@@ -279,7 +279,7 @@ class SILPhiArgument : public SILArgument {
 
   static bool classof(const SILInstruction *) = delete;
   static bool classof(const SILUndef *) = delete;
-  static bool classof(const SILNode *node) {
+  static bool classof(SILNodePointer node) {
     return node->getKind() == SILNodeKind::SILPhiArgument;
   }
 };
@@ -322,7 +322,7 @@ class SILFunctionArgument : public SILArgument {
 
   static bool classof(const SILInstruction *) = delete;
   static bool classof(const SILUndef *) = delete;
-  static bool classof(const SILNode *node) {
+  static bool classof(SILNodePointer node) {
     return node->getKind() == SILNodeKind::SILFunctionArgument;
   }
 };